Human Physiology Questions and Answers – Chemical Coordination and Integration – Hypothalamus

This set of Human Physiology Multiple Choice Questions & Answers (MCQs) focuses on “Chemical Coordination and Integration – Hypothalamus”.

1. What connects hypothalamus to the pituitary?
a) Infundibulam
b) Corpus callosum
c) Anterior
d) Cerebral cortex
View Answer

Answer: a
Explanation: Infundibulam is a funnel shaped structure. It is the connection between hypothalamus and posterior pituitary.

2. Hypothalamus is a part of __________
a) Midbrain
b) Forebrain
c) Hind brain
d) Future brain
View Answer

Answer: b
Explanation: Hypothalamus is the part of the brain that contains a number of small nuclei with a variety of function. It links the nervous system to endocrine system.

3. Displacement of the set point in the hypothalamus is due to _________
a) Pathogens
b) Effectors
c) Receptors
d) Pyrogens
View Answer

Answer: d
Explanation: Displacement of the set point in the hypothalamus is due to Pyrogens. Pyrogens are a low molecular weight protein produced in response to stimulation by exogenous pyrogens and released into the circulation system.

4. Hormones produced in hypothalamus are _________
a) Oxytocin and estrogen
b) Oxytocin and testosterone
c) Oxytocin and Antidiuretic hormone
d) Oxytocin and thyroxine
View Answer

Answer: c
Explanation: Hormones produced in hypothalamus are Oxytocin and Antidiuretic hormone. They have their specific function and specific target site.

5. Which of the following events could be a result of damage to hypothalamus portal system?
a) Decreased secretion of ADH
b) Decreased secretion oxytocin
c) Decreased secretion TSH
d) Decreased secretion PTH
View Answer

Answer: c
Explanation: Secretion of Thyroid stimulation hormone will be decreased if there is any damage in hypothalamus region.
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6. Secretion of many anterior pituitary hormones are controlled by other hormones from _________
a) Pancreatic lobes
b) Adrenal gland
c) Hypothalamus
d) Thyroid gland
View Answer

Answer: c
Explanation: Hypothalamus controls the secretion of anterior pituitary hormones. It is present in the forebrain.

7. Which of the following consists of nerve tissue and down growth from hypothalamus?
a) Posterior pituitary
b) Anterior pituitary
c) Thymus
d) Adrenal
View Answer

Answer: a
Explanation: Posterior pituitary is the posterior lobe of pituitary gland. It is a collection of axonal projections from hypothalamus that terminate behind anterior pituitary.

8. If hypothalamus fails to secrete GnRH the effect would be _________
a) Hypersecretion of oxytocin
b) Hypersecretion of prolactin
c) Hypersecretion of pituitary gonadotropins
d) Hyposecretion of pituitary gonadotropins
View Answer

Answer: d
Explanation: GnRH is gonadotropin releasing hormone. They are released in gonads. If hypothalamus fails to secrete GnRH the effect would be Hyposecretion of pituitary gonadotropins.

9. Osmoreceptors in hypothalamus are involved in _________
a) Secretion of GH
b) Secretion of ADH
c) Secretion of ACTH
d) Secretion of Aldosterone
View Answer

Answer: b
Explanation: Osmoreceptors are sensory receptor found in hypothalamus. It detects changes in osmotic pressure.

10. GnRH directly stimulates release of _________
a) FSH
b) Progesterone
c) Estrogen
d) Thyrocalcitonin
View Answer

Answer: a
Explanation: GnRH directly stimulates the release of FSH. It regulates the development, growth, pubertal maturation, and reproductive processes of the body.

Sanfoundry Global Education & Learning Series – Human Anatomy and Physiology.

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Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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